Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 10: Diffraction and Coherences (with MO)

A 10.4: Vortrag

Montag, 6. März 2017, 18:00–18:15, N 6

Ultrashort polarization-tailored bichromatic fields — •Stefanie Kerbstadt, Lars Englert, Tim Bayer, and Matthias Wollenhaupt — Carl von Ossietzky Universität Oldenburg, Institut für Physik, Carl-von-Ossietzky-Straße 9-11, 26129 Oldenburg

Ultrashort bichromatic laser fields with commensurable center frequencies, have emerged as a powerful tool to coherently control the dynamics of free electron wave packets [1]. Here we present a novel scheme for the generation of polarization-tailored bichromatic laser fields based on ultrafast pulse shaping techniques. The scheme utilizes a 4f polarization pulse shaper equipped with a composite polarizer in the Fourier plane for independent amplitude and phase modulation of two spectral bands of a whitelight supercontinuum [2]. The setup allows us to sculpture the spectral amplitude, phase and polarization profile of both colors individually, offering an enormous versatility of producible bichromatic waveforms. In addition, the scheme features built-in dispersion management and the option for shaper-based pulse diagnostics. We demonstrate the fidelity of the generated bichromatic fields by optical characterization and present first results of quantum control of bichromatic photoionization of atoms employing photoelectron imaging tomography.

[1] D.B. Milosevic et al., Phys. Rev. A 61 (6) (2000), 063403.

[2] S. Kerbstadt et al., J. Mod. Opt., accepted (2016).